Sizzle, sizzle. Fit in five cardio sessions a week. Just think: Take weekends off! Mix and match. Hit three workouts once each; repeat two faves. Timing matters. To torch even more fat, Jillian suggests toning pre-cardio.

Workout 1: Elliptical & stairstepper

Start on the elliptical.

Minutes

Incline

Resistance

RPM

5

10

4

60+

10 forward

15

7

50+

10 backward

15

7

50+

Hop on the stairstepper.

Minutes

Level

10

4

5 forward

3

5 backward

2

Tip: Try not to hold the handles!

Total time: 45 minutes

Workout 2: Treadmill walk & jog

Minutes

Incline

Speed

5

3.5

3.5

2

2

5

5

5

3.7

2

2

5.2

5

5

3.7

2

2

5.5

5

7

3.7

2

2

5.5

5

10

3.5

2

2

6

4

7

3.7

1

2

5.5

4

5

3.7

1

2

5.2

Total time: 45 minutes

Workout 3: Indoor bike & jump rope

Activity

Minutes

Resistance

Speed

Bike

5

5

12 mph

Jump rope

1

Bike

5

7

10 mph

Jump rope

2

Bike

5

10

7 mph

Jump rope

3

Bike

5

3

20 mph

Jump rope

4

Bike

5

10

7 mph

Bike

10

5

15 mph

Total time: 45 minutes

Workout 4: 30-minute cardio sizzler

Activity

Minutes

Jump rope

3

Butt kicks*

3

Jumping jacks

3

Jog in place

3

Mountain climbers**

3

Jump rope

3

Butt kicks

3

Jumping jacks

3

Jog in place

3

Mountain climbers

3

Total time: 30 minutes

*Butt kicks: Jog in place, kicking heels to butt.

**Mountain climbers: In push-up position, alternate bringing one knee toward chest at a time in a fluid motion.